CN108075618B - Adapter, device for suppressing track circuit harmonic - Google Patents
Adapter, device for suppressing track circuit harmonic Download PDFInfo
- Publication number
- CN108075618B CN108075618B CN201711120494.7A CN201711120494A CN108075618B CN 108075618 B CN108075618 B CN 108075618B CN 201711120494 A CN201711120494 A CN 201711120494A CN 108075618 B CN108075618 B CN 108075618B
- Authority
- CN
- China
- Prior art keywords
- choke transformer
- filter circuit
- terminal
- primary side
- adapter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0038—Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Filters And Equalizers (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The embodiment of the invention provides an adapter, which is connected with a choke transformer, wherein the choke transformer is installed in a track circuit, and the adapter comprises a first filter circuit used for suppressing higher harmonics and connected with the primary side of the choke transformer; the second filter circuit is used for inhibiting power frequency interference and is connected with the secondary side of the choke transformer; the first filter circuit and the second filter circuit are combined in parallel, and the first filter circuit and the second filter circuit after being connected in parallel can form impedance higher than a first threshold value for frequency shift signals on the track circuit. The adapter provided by the embodiment of the invention can solve the technical problems of monitoring fluctuation and relay slow-release caused by harmonic voltage. The embodiment of the invention also provides a device for inhibiting the harmonic wave of the track circuit.
Description
Technical Field
The invention relates to the field of rail transit, in particular to an adapter and a device for inhibiting harmonic waves of a rail circuit.
Background
The track circuit is a circuit formed by a steel rail line and steel rail insulation, is used for automatically and continuously detecting whether the section of the line is occupied by rolling stock, and is also used for controlling a signal device or a switch device so as to ensure equipment for driving safety. As shown in fig. 1, the electric railway conductive interference, that is, the unbalanced traction current has a common transmission channel with the signal current of the track circuit. In practical application, the traction current in the steel rail is not equal any more due to unbalanced factors, so that differential mode current is formed, the differential mode current and the receiving end impedance form receiving end rail surface voltage, and the receiving end rail surface voltage is transmitted to indoor receiving equipment, wherein direct current components, power frequency fundamental waves and harmonic components of the differential mode current formed by the traction current influence signal current of a track circuit, and therefore the track circuit equipment needs to protect conductive interference from the aspect of system design.
Referring to fig. 2, at present, for suppressing harmonic components in the traction current, protection is generally performed by a scheme of providing a choke transformer and a parallel adapter (QSP) in the station. Taking the station choke from 1700Hz to 2300Hz as an example, after the adapter (QSP) is hung up, the impedance frequency characteristic is as shown in FIG. 3, and when the frequency is 50Hz, the impedance forms a zero point; at a frequency of 1850Hz, the impedance forms a pole and is greater than the standard requirement of 17 Ω. After the frequency exceeds 1850Hz, the impedance presents the capacitance, and the impedance for 4150Hz and 4450Hz which can form aliasing reaches about 2.5 omega, therefore, the existing adapter has poor effect of inhibiting signals with the frequency of 4150Hz-4450 Hz. Since the frequency of the track circuit receiving device cannot be infinite, when the relationship between the harmonic frequency in the traction current and the frequency of the track circuit receiving device is fixed, the aliasing of the signal inevitably occurs, and if the amount of the aliasing of the high frequency is high enough, the following phenomena occur: (1) voltage fluctuation of the rail-out and branch collector and voltage signal fluctuation of collection monitored by a microcomputer trigger monitoring and alarming in severe cases; (2) receiver delay drop: because the harmonic interference voltage is continuously higher than the judgment threshold of the receiver, the slow release time exceeds the specified value at the moment, and the interlock can not be unlocked.
Disclosure of Invention
The embodiment of the invention provides an adapter, which is used for eliminating the technical problems of monitoring fluctuation and relay slow release caused by harmonic voltage.
The technical scheme is as follows:
an adapter connected with a choke transformer, the choke transformer being installed in a track circuit, the adapter comprising:
a first filter circuit for suppressing higher harmonics, connected to a primary side of the choke transformer;
the second filter circuit is used for inhibiting power frequency interference and is connected with the secondary side of the choke transformer;
the first filter circuit and the second filter circuit are combined in parallel, and the first filter circuit and the second filter circuit after being connected in parallel can form impedance higher than a first threshold value for the frequency shift signal on the track circuit.
Preferably, in the above adapter, the first filter circuit includes a capacitor component and an inductor component connected in series;
the first end of the capacitor assembly is connected with the primary side of the choke transformer, the second end of the capacitor assembly is connected with the first end of the inductor assembly, and the second end of the inductor assembly is connected with the primary side of the choke transformer.
Preferably, in the above adapter, the capacitance assembly includes a first resistance element and a first capacitance element connected in series, and the inductance assembly includes a second resistance element and a first inductance element connected in series;
a first terminal of the first resistance element is connected to the primary side of the choke transformer, a second terminal of the first resistance element is connected to a first terminal of the first capacitance element, a second terminal of the first capacitance element is connected to a first terminal of the second resistance element, a second terminal of the second resistance element is connected to a first terminal of the first inductance element, and a second terminal of the first inductance element is connected to the primary side of the choke transformer.
Preferably, in the above adapter, the second filter circuit includes a second inductance element and a second capacitance element connected in series;
a first end of the second inductance element is connected to the secondary side of the choke transformer, a second end of the second inductance element is connected to a first end of the second capacitance element, and a second end of the second capacitance element is connected to the secondary side of the choke transformer.
Preferably, the adapter further includes a discharge resistor, and the second end of the second capacitive element is connected to the secondary side of the choke transformer through the discharge resistor.
The embodiment of the invention also provides a device for inhibiting track circuit harmonic waves, which comprises: choke transformers, adapters; the choke transformer is installed in a track circuit, and the adapter includes:
a first filter circuit for suppressing higher harmonics, connected to a primary side of the choke transformer;
the second filter circuit is used for inhibiting power frequency interference and is connected with the secondary side of the choke transformer;
the first filter circuit and the second filter circuit are combined in parallel, and the first filter circuit and the second filter circuit after being connected in parallel can form impedance higher than a first threshold value for the frequency shift signal on the track circuit.
Preferably, in the above apparatus for suppressing track circuit harmonics, the first filter circuit includes a capacitor component and an inductor component connected in series;
the first end of the capacitor assembly is connected with the primary side of the choke transformer, the second end of the capacitor assembly is connected with the first end of the inductor assembly, and the second end of the inductor assembly is connected with the primary side of the choke transformer.
Preferably, in the above apparatus for suppressing track circuit harmonics, the capacitance component includes a first resistance element and a first capacitance element connected in series, and the inductance component includes a second resistance element and a first inductance element connected in series;
a first terminal of the first resistance element is connected to the primary side of the choke transformer, a second terminal of the first resistance element is connected to a first terminal of the first capacitance element, a second terminal of the first capacitance element is connected to a first terminal of the second resistance element, a second terminal of the second resistance element is connected to a first terminal of the first inductance element, and a second terminal of the first inductance element is connected to the primary side of the choke transformer.
Preferably, in the above apparatus for suppressing track circuit harmonics, the second filter circuit includes a second inductance element and a second capacitance element connected in series;
a first end of the second inductance element is connected to the secondary side of the choke transformer, a second end of the second inductance element is connected to a first end of the second capacitance element, and a second end of the second capacitance element is connected to the secondary side of the choke transformer.
Preferably, the above apparatus for suppressing a track circuit harmonic further includes a discharge resistor, and the second end of the second capacitive element is connected to the secondary side of the choke transformer through the discharge resistor.
The embodiment of the invention provides an adapter, which is connected with a choke transformer, wherein the choke transformer is installed in a track circuit, and the adapter comprises a first filter circuit used for suppressing higher harmonics and connected with the primary side of the choke transformer; the second filter circuit is used for inhibiting power frequency interference and is connected with the secondary side of the choke transformer; the first filter circuit and the second filter circuit are combined in parallel, and the first filter circuit and the second filter circuit after being connected in parallel can form impedance higher than a first threshold value for frequency shift signals on the track circuit. The adapter provided by the embodiment of the invention can solve the technical problems of monitoring fluctuation and relay slow-release caused by harmonic voltage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a conventional electrified railroad conductive disturbance;
FIG. 2 is a schematic diagram of a prior art adapter and a choke transformer;
fig. 3 is an impedance frequency characteristic of a primary side of a choke transformer after a conventional adapter is combined with the choke transformer;
FIG. 4 is a schematic structural diagram of an adapter according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a first filter circuit according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second filter circuit according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of an adapter provided in the embodiment of the present invention;
fig. 8 is an impedance frequency characteristic of a primary side of a choke transformer after an adapter is combined with the choke transformer according to an embodiment of the present invention;
fig. 9 is a diagram illustrating an apparatus for suppressing track circuit harmonics according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of embodiments of the invention and not all embodiments of the invention, with the understanding that the invention is not limited to the example embodiments described herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without inventive step, are intended to be within the scope of the present invention. In the present specification and the drawings, substantially the same elements and functions will be denoted by the same reference numerals, and repetitive description thereof will be omitted. Moreover, descriptions of functions and constructions well known in the art may be omitted for clarity and conciseness.
In order to solve the technical problems of monitoring fluctuation and relay slow-release caused by harmonic voltage, the embodiment of the invention provides an adapter.
The following describes an adapter provided in an embodiment of the present invention.
Referring to fig. 4, fig. 4 illustrates a schematic structural diagram of an adapter, wherein an adapter 1 'is connected with a choke transformer 2', the choke transformer 2 'is installed in a track circuit, and the adapter 1' comprises a first filter circuit 11 and a second filter circuit 12. A first filter circuit 11 for suppressing higher harmonics, connected to the primary side of the choke transformer 2'; a second filter circuit 12 for suppressing power frequency interference, connected to the secondary side of the choke transformer 2'; the first filter circuit 11 and the second filter circuit 12 are combined in parallel, and the first filter circuit 11 and the second filter circuit 12 after being connected in parallel can form impedance higher than a first threshold value for the frequency shift signal on the track circuit. The first threshold is a threshold that does not reduce the impedance of the receiving end of the track circuit, and for example, the first threshold may be 17 Ω.
The track circuit may be a single type of train system such as a subway system, an inter-city railway system, a high-speed railway system, a general train system, or the like. The track circuit may also be a hybrid train system, such as a combination high-speed train and regular train system. Those skilled in the art can apply the choke transformer of the present invention to various track circuits based on understanding the principle of the present invention.
Referring to fig. 5, the first filter circuit may include a capacitive component 111 and an inductive component 112 connected in series. The first end of the capacitor assembly is connected with the primary side of the choke transformer, the second end of the capacitor assembly is connected with the first end of the inductor assembly, and the second end of the inductor assembly is connected with the primary side of the choke transformer. Capacitive assembly 111 includes a first resistive element and a first capacitive element C1 in series, and inductive assembly 112 includes a second resistive element and a first inductive element L1 in series; a first terminal of the first resistance element is connected to the primary side of the choke transformer, a second terminal of the first resistance element is connected to a first terminal of the first capacitance element C1, a second terminal of the first capacitance element C1 is connected to a first terminal of the second resistance element, a second terminal of the second resistance element is connected to a first terminal of the first inductance element L1, and a second terminal of the first inductance element L1 is connected to the primary side of the choke transformer.
Referring to fig. 6, the second filter circuit includes a second inductive element L2 and a second capacitive element C2 connected in series. A first terminal of the second inductance element L2 is connected to the secondary side of the choke transformer, a second terminal of the second inductance element L2 is connected to a first terminal of the second capacitance element C2, and a second terminal of the second capacitance element C2 is connected to the secondary side of the choke transformer. The second filter circuit is connected to the secondary side of the choke transformer and is connected in parallel to the first filter circuit.
Referring to fig. 7, fig. 7 shows a schematic diagram of one configuration of the adapter and choke transformer connection. In fig. 7, i denotes the primary side of the choke transformer 2', ii denotes the secondary side of the choke transformer 2', and 1 to 12 denote the terminals of the choke transformer 2', respectively. The adapter 1 'is composed of two filter circuits in parallel connection, wherein the first filter circuit composed of a first resistor, a C1, a second resistor and an L1 is used for suppressing higher harmonics, and the led-out connecting terminals are connected in parallel to terminals 1 and 2 on the primary side of the choke transformer 2', namely a primary side traction coil. The second filter circuit formed by C2 and L2 forms series resonance to the 50Hz signal of the traction current to generate low impedance, and the lead-out connection terminal is connected in parallel with the terminals 4 and 12 on the secondary side of the choke transformer 2'. Further, in another embodiment of the present invention, the adaptor further includes a discharge resistor RD, and referring to fig. 7, the second terminal of the second capacitive element C2 is connected to the secondary side of the choke transformer 2 'through the discharge resistor RD, and is connected to the terminal 12 on the secondary side of the choke transformer 2'.
As shown in fig. 8, after the choke transformer is combined with the adapter, the impedance frequency characteristic of the primary side of the choke transformer is: at frequencies of 50Hz and 4300Hz, the impedance of the primary side of the choke transformer forms a zero impedance and at frequency of 1850Hz, a pole impedance. When the frequency exceeds 1850Hz, the impedance presents the capacity, thus the impedance of 4150Hz and 4450Hz interference signals formed by the track circuit frequency shift signals can be reduced to be lower than 0.3 omega, and the impedance of the original old adapter in the frequency band is 2.5 omega, therefore, under the influence of the same differential mode interference current, after the adapter provided by the figure 7 is installed, the voltage of the interference rail surface transmitted into a room can be reduced by 8 times compared with the voltage of the existing interference rail surface. Therefore, for a track circuit transmission channel, the adapter provided by the invention can well inhibit 50Hz power frequency interference, and simultaneously keeps high impedance for a frequency shift signal, so that the impedance of a receiving end of a track circuit is not reduced, and the technical problems of monitoring fluctuation and relay slow release caused by harmonic voltage are solved.
In addition, after the choking transformer is hung on the adapter, all indexes of the adapter meet the index requirements on choking current in technical conditions for temporary signal products of passenger special lines and railways.
Referring to fig. 9, an embodiment of the present invention further provides an apparatus for suppressing track circuit harmonics, including: choke transformer 2', adapter 1'. The choke transformer 2 'is installed in a track circuit, and the adapter 1' includes:
a first filter circuit 11 for suppressing higher harmonics, connected to the primary side of the choke transformer 2';
a second filter circuit 12 for suppressing power frequency interference, connected to the secondary side of the choke transformer 2';
the first filter circuit 11 and the second filter circuit 12 are combined in parallel, and the first filter circuit 11 and the second filter circuit 12 after being connected in parallel can form impedance higher than a first threshold value for the frequency shift signal on the track circuit.
In other embodiments of the present invention, the first filter circuit includes a capacitor component and an inductor component connected in series;
the first end of the capacitor assembly is connected with the primary side of the choke transformer, the second end of the capacitor assembly is connected with the first end of the inductor assembly, and the second end of the inductor assembly is connected with the primary side of the choke transformer.
In other embodiments of the present invention, the capacitor assembly includes a first resistor element and a first capacitor element connected in series, and the inductor assembly includes a second resistor element and a first inductor element connected in series;
the first end of the first resistance element is connected with the primary side of the choke transformer, the second end of the first resistance element is connected with the first end of the first capacitance element, the second end of the first capacitance element is connected with the first end of the second resistance element, the second end of the second resistance element is connected with the first end of the first inductance element, and the second end of the first inductance element is connected with the primary side of the choke transformer.
In another embodiment of the present invention, the second filter circuit includes a second inductance element and a second capacitance element connected in series;
the first end of the second inductance element is connected with the secondary side of the choke transformer, the second end of the second inductance element is connected with the first end of the second capacitance element, and the second end of the second capacitance element is connected with the secondary side of the choke transformer.
In other embodiments of the present invention, the second capacitor further includes a discharge resistor, and the second terminal of the second capacitor is connected to the secondary side of the choke transformer through the discharge resistor.
After the choke transformer is combined with the adapter, as shown in fig. 8, the impedance frequency characteristic of the primary side of the choke transformer: at frequencies of 50Hz and 4300Hz, the impedance of the primary side of the choke transformer forms a zero impedance and at frequency of 1850Hz, a pole impedance. When the frequency exceeds 1850Hz, the impedance presents the capacity, thus the impedance of 4150Hz and 4450Hz interference signals formed by the track circuit frequency shift signals can be reduced to be lower than 0.3 omega, and the impedance of the original old adapter in the frequency band is 2.5 omega, therefore, under the influence of the same differential mode interference current, after the adapter provided by the figure 7 is installed, the voltage of the interference rail surface transmitted into a room can be reduced by 8 times compared with the voltage of the existing interference rail surface. Therefore, for a track circuit transmission channel, by adopting the combination of the choke transformer and the adapter, the invention not only can well inhibit the power frequency interference of 50Hz, but also keeps high impedance for a frequency shift signal, thereby not reducing the impedance of a receiving end of the track circuit and eliminating the technical problems of monitoring fluctuation and relay slow-release caused by harmonic voltage.
It should be noted that:
in the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Those skilled in the art will understand that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may modify the technical solutions described in the foregoing embodiments or may substitute some or all of the technical features; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. An adapter, connected to a choke transformer installed in a track circuit, the adapter comprising:
the first filter circuit is used for suppressing higher harmonics, is connected with the primary side of the choke transformer and reduces the impedance of 4150Hz and 4450Hz interference signals which are formed by aliasing of track circuit frequency shift signals to be lower than 0.3 omega;
the second filter circuit is used for inhibiting power frequency interference and is connected with the secondary side of the choke transformer;
the first filter circuit and the second filter circuit are combined in parallel, and the first filter circuit and the second filter circuit after being connected in parallel can form impedance higher than a first threshold value for the frequency shift signal on the track circuit;
and a wiring terminal led out by the first filter circuit is connected in parallel with a primary side coil of a primary side of the choke transformer.
2. The adapter of claim 1 wherein said first filter circuit comprises a capacitive component and an inductive component in series;
the first end of the capacitor assembly is connected with the primary side of the choke transformer, the second end of the capacitor assembly is connected with the first end of the inductor assembly, and the second end of the inductor assembly is connected with the primary side of the choke transformer.
3. The adapter of claim 2 wherein the capacitive assembly comprises a first resistive element and a first capacitive element in series, and the inductive assembly comprises a second resistive element and a first inductive element in series;
a first terminal of the first resistance element is connected to the primary side of the choke transformer, a second terminal of the first resistance element is connected to a first terminal of the first capacitance element, a second terminal of the first capacitance element is connected to a first terminal of the second resistance element, a second terminal of the second resistance element is connected to a first terminal of the first inductance element, and a second terminal of the first inductance element is connected to the primary side of the choke transformer.
4. The adapter of claim 1 wherein said second filter circuit comprises a second inductive element and a second capacitive element in series;
a first end of the second inductance element is connected to the secondary side of the choke transformer, a second end of the second inductance element is connected to a first end of the second capacitance element, and a second end of the second capacitance element is connected to the secondary side of the choke transformer.
5. The adapter as claimed in claim 4, further comprising a discharge resistor, wherein the second terminal of the second capacitive element is connected to the secondary side of the choke transformer through the discharge resistor.
6. An apparatus for suppressing track circuit harmonics, comprising: choke transformers, adapters; the choke transformer is installed in a track circuit, and the adapter includes:
the first filter circuit is used for suppressing higher harmonics, is connected with the primary side of the choke transformer and reduces the impedance of 4150Hz and 4450Hz interference signals which are formed by aliasing of track circuit frequency shift signals to be lower than 0.3 omega;
the second filter circuit is used for inhibiting power frequency interference and is connected with the secondary side of the choke transformer;
the first filter circuit and the second filter circuit are combined in parallel, and the first filter circuit and the second filter circuit after being connected in parallel can form impedance higher than a first threshold value for the frequency shift signal on the track circuit;
and a wiring terminal led out by the first filter circuit is connected in parallel with a primary side coil of a primary side of the choke transformer.
7. The apparatus of claim 6, wherein the first filtering circuit comprises a capacitive component and an inductive component in series;
the first end of the capacitor assembly is connected with the primary side of the choke transformer, the second end of the capacitor assembly is connected with the first end of the inductor assembly, and the second end of the inductor assembly is connected with the primary side of the choke transformer.
8. The apparatus of claim 7, wherein the capacitive assembly comprises a first resistive element and a first capacitive element in series, and the inductive assembly comprises a second resistive element and a first inductive element in series;
a first terminal of the first resistance element is connected to the primary side of the choke transformer, a second terminal of the first resistance element is connected to a first terminal of the first capacitance element, a second terminal of the first capacitance element is connected to a first terminal of the second resistance element, a second terminal of the second resistance element is connected to a first terminal of the first inductance element, and a second terminal of the first inductance element is connected to the primary side of the choke transformer.
9. The apparatus of claim 6, wherein the second filtering circuit comprises a second inductive element and a second capacitive element in series;
a first end of the second inductance element is connected to the secondary side of the choke transformer, a second end of the second inductance element is connected to a first end of the second capacitance element, and a second end of the second capacitance element is connected to the secondary side of the choke transformer.
10. The apparatus of claim 9, further comprising a discharge resistor, wherein the second terminal of the second capacitive element is connected to the secondary side of the choke transformer through the discharge resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711120494.7A CN108075618B (en) | 2017-11-14 | 2017-11-14 | Adapter, device for suppressing track circuit harmonic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711120494.7A CN108075618B (en) | 2017-11-14 | 2017-11-14 | Adapter, device for suppressing track circuit harmonic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108075618A CN108075618A (en) | 2018-05-25 |
| CN108075618B true CN108075618B (en) | 2020-10-23 |
Family
ID=62159771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711120494.7A Active CN108075618B (en) | 2017-11-14 | 2017-11-14 | Adapter, device for suppressing track circuit harmonic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108075618B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915946B (en) * | 2019-03-21 | 2020-12-22 | 广东美的制冷设备有限公司 | Electric control device, outdoor unit and air conditioner |
| CN115173831B (en) * | 2022-09-06 | 2022-12-13 | 北京和利时系统工程有限公司 | Track circuit impedance matching device and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1143849A (en) * | 1995-08-18 | 1997-02-26 | 郭宝库 | High-low voltage capacitor complete compensator |
| CN101032971A (en) * | 2007-04-27 | 2007-09-12 | 北京交通大学 | Audio frequency orbit circuit impedance matching circuit in station |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105752109B (en) * | 2016-02-23 | 2017-06-06 | 西安思源科创轨道交通技术开发有限公司 | It is a kind of can indoor adjustment phase-sensitive track circuits |
-
2017
- 2017-11-14 CN CN201711120494.7A patent/CN108075618B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1143849A (en) * | 1995-08-18 | 1997-02-26 | 郭宝库 | High-low voltage capacitor complete compensator |
| CN101032971A (en) * | 2007-04-27 | 2007-09-12 | 北京交通大学 | Audio frequency orbit circuit impedance matching circuit in station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108075618A (en) | 2018-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103552486B (en) | A kind of track circuit | |
| CN101973287A (en) | Non-insulation track circuit | |
| CN201235831Y (en) | Four-wire lead security device of phase-sensitive track circuit | |
| CN201240392Y (en) | High shunt sensitivity 25Hz phase detecting track circuit for electrified sections | |
| CN108075618B (en) | Adapter, device for suppressing track circuit harmonic | |
| CN108092487B (en) | Device for suppressing track circuit harmonic wave | |
| CN204341095U (en) | A kind of tuning compensator of anti-crosstalk and track circuit | |
| CN107985338B (en) | Adapter, device for suppressing track circuit harmonic | |
| CN209535103U (en) | A kind of track circuit guard system | |
| US4622522A (en) | Track circuit for AC electrified railways | |
| WO2020063337A1 (en) | Track circuit protection system | |
| RU2328400C1 (en) | Track circuit | |
| CN208248211U (en) | Mechanical insulated protective device in a kind of track circuit station | |
| CN108092269A (en) | A kind of device with harmonics restraint | |
| RU2455184C1 (en) | Branched track circuits of scissors crossing | |
| WO2018082408A1 (en) | Traction return current apparatus | |
| CN210327035U (en) | Track circuit higher harmonic suppression circuit | |
| CN107985129B (en) | Insulating joint | |
| CN107985130B (en) | Insulating joint | |
| CN115173831B (en) | Track circuit impedance matching device and system | |
| CN201283879Y (en) | Outdoor isolator | |
| JP4472472B2 (en) | substation | |
| GB2058421A (en) | Track Circuits for Use in Electrified Railways | |
| CN212543370U (en) | Suppression device for power supply cable to track circuit harmonic space induction interference | |
| D'Addio et al. | Integrated modelling of audiofrequency track circuits |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |